Collapsible scaffold-bracket.



W. J. YOUNG.

COLLAPSIBLE SCAFFOLD BRACKET.

APPLIcATIou mio JAN. l1. 191s.

1 1 97,885 Patented Sept. 12, 1916.

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a 5d /5 l) i --f-l WILLIAM J. YOUNG, OT ROCHESTER, NEW YORK. i

. conL'APsIBLE soAEEoLD-BEACKET.

, Specication of Letters Patent'. Patented Sept. 12, 1916.

Application led January 17,1916. Serial No. 72,515.'

To @ZZ fr0/0m t may concer/n i Be it known that I, VijLLIAM J. YOUNG, a citizen of the United States, and resident of Rochester, in the county of Monroe and State of New York, have invented certain new-and useful Improvements in Collapsible Scaffold-Brackets, of which the following is a specification. Y

T his invention relates to collapsible brackets, and an object of the same is to provide afbracket having more than one brace or strut member and at the same time so constructed that it may readily be folded into a comparatively small space andeasily attached to, or detached from, a wall or other surface.

To these and other ends, the invention consists in certain parts and combinations of parts all of which will be hereinafter described, the novel features being pointed out in the appended claims.

In the drawings Figure 1 is a top-plan view of a bracket embodying this invention; Fig. 2 is a side-elevation thereof in its eX- tended position, showing the bracket attached to a frame building; Fig. 3 is a sideelevation of the bracket in folded or collapsed position; Fig. 4 is a section on the line -fl of Fig. 2; and Fig. 5 is a partial side-elevation showing a modied construction.

The bracket as shown in the drawings is adapted to support a platform or scaffold such as is used by workmen in constructing a building. To this end a main supporting member 5 is provided which, in the present instance, is shown as a piecel of structural angle-iron, which may have a knee-piece 6 fastened to one end. Through this kneepiece may extend a bolt 7 to anchor the bracket to the frame-timbers or studding 8 of a house or other building. The bolt 7 carries a substantially7 U-shaped strap V9 between two nuts 10, the strap having lone arm longer than the other. In setting the bracket upon a vertical wall, an approximate adjustment is obtained by means of the nuts 10, and then a wing-nut or thumbscrew 11 on the end of the bolt 7 is adjusted to pull the latter against the outer face of the building and the longer arm of the strap 9 against the studding 8, as shown in Fig. 1.

To maintain the supporting member 5 in horizontal position for the purpose before mentioned, braces or struts 12 and 13, which may also bie of structural angle-iron to provide the necessary r1g1dty,.are pivoted at their upper ends tothe member 5, and their lower ends are pivoted'tov opposite ends of 60 a link 11. The lower ends of the braces 12 y and 13, or the link 14, are connected with some support' in order that the braces-may be of effect in sustaining the weight placed upon the member 5. Av simple and effective connection may comprise the bars 15 and 16, which are pivoted together at 17, the upper end-of the bar 16 beingpivoted to the supporting member 5 and the lower end of the bar15 being pivoted on the pivot pin 15n 70 which connectsth'e brace 13 with the link v 14, and thus when placed in the position shown in Fig. 2 constitute a toggle connection.

To fold or collapse the bracket to the position shown in Fig. 3, the pivot 17 is carried toward the outer end of the member 5, or toward the right in Fig. 2, after the bolt 7 `has been detached, which permits the bar 15 to move toward the supporting member 5. The braces 12 and 13 lwill then swing upward .with the link 14 until the whole structure is reduced into compact form.

In Fig. 5 a modified construction is illustrated in which a chain 18 is substituted for the toggle-levers 15. and 16. This chain-is fastened at its lower end to the link 19, which serves the same purpose as the link 14 in Fig. 2j and atits upper end is attached to the supporting member 5. When a weight is placed upon the member 5, the 'i downward pressure of the braces 12 and 13 places the chain 18 under tension.` When the bracket is folded, the chain will occupy even less space than the pieces 15 and 16.

To maintain a series of planks or platform parts in position on the member 5, lugs 5a 'be struck up from the latter to prevent the planks from moving outwardly, or similar devices, such as rivets or' studs, maybe used in place of these lugs.

Brackets have been used for supporting scaffolding which are adapted to be folded to some extent, or, more commonly, are adapted to be taken apart by removing several bolts and thus be reduced to a small compass, but in practically all of these brackets it has been possible to use only one strut vor brace without necessitating the removal of at least one or two bolts. In the present invention the interposition of the link 1&1 as a connection between the lowel/ ends of the braces 12 and 13 permits the use of a plurality of the latter without necessitating the removal of any connections between the different members when the bracket is folded or collapsed.

This invention is not limited to the speciiic construction herein described and shown, but may be modilied as required in manufacture as to proportion and form of the members within the definition of the following claims.

What I claim as my invention and desire to secure by Letters Patent is l. A collapsible bracket having,\.in combination7 a supporting` member; a plurality of braces, each pivoted on said supporting member on different centers; a link pivotally connectingsaid braces on diierent centers; and means connecting` said link and said supporting member.

2. A collapsible bracket having, in combina-tion, a supporting member; a plurality of braces, each pivoted; on said supporting member on different centers; a link connecting said braces on dierent centers; and a oldable connection between said link and said supporting member.

3. A collapsible bracket having, in combination, a supporting member; a plurality of braces pivoted at their corresponding ends on said supporting member on different centers; a link connection between the other ends of said braces; and a toggle connection between said link and said supporting member.

4f. A collapsible bracket having, in combination, a supporting member; a plurality of braces pivoted on different centers at their corresponding ends on said supporting member; a member pivotally connecting the other ends of said braces on different cenn ters; and a foldable connect-ion between the pivotally connecting member and the supporting member.

5. A collapsible bracket having, in combination, a supporting member; a plurality of braces pivoted thereto on dierent centers; a connection between corresponding ends of said braces adapted to permit the latter to swing toward said supporting `member; and a oldable member between said connection and said supporting member.

6. A collapsible bracket having; in combination, a supporting member; a plurality7 of braces in one plane' pivoted on diierent centers at their corresponding ends on said supporting member; a link connection between the other ends of said braces; and a :Foldable connection between .said link and said supporting member.

WILLIAM J. YOUNG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

